Key of Bb. Lightweight; .463" bore; 4-3/4" one-piece bell; one-piece, drawn gold brass mouthpipe; shepherd's crook; Monel pistons; 1st valve slide thumb hook; 3rd valve slide ring; silver-plated finish. All Yamaha wind instruments come with a limited 5-year warranty. Monel pistonsMonel pistons are resistant to corrosion and are an ideal choice for professional cornet pistons which must retain precise fit and smooth action over many years.Hand-lapped pistons and slidesHand-lapping pistons and slides ensures an absolutely perfect fit and seal between the pistons and casings or slide parts. Such a perfect fit helps to achieve smooth air flow and smooth action and improve the response and intonation of the instrument.Pressure-formed tubingPerfectly rounded tubing results in less turbulence and a smoother air flow, thus allowing for an excellent scale and reduced resistance.Laser-fused pluzuma welded bellA high-energy laser fuses the brass together for a virtually seamless bell which allows continuous even vibrations.One-piece, drawn, gold brass mouthpipeThis type of mouthpipe offers excellent intonation, response and proper resistance.Lightweight constructionThe YCR-6330S combines lightweight construction with short-type cornet design to facilitate a relatively brilliant sound favored by soloists.